Xpand!2 is a great VST, and does pretty much whatever you need. Until a great sound pops into your head, and you can't recreate it with the plug-in.
Pros:
Easy to learn and use
Sounds great
Diverse soundbanks
Is very versatile
Cheap
Cons:
It's versatile, but this also means that it doesn't really do anything REALLY well. It does everything sorta well.
The save function is frustrating and unstable